MATLAB curve fitting for 1D, 2D and 3D

I use three examples to show the procedures for MATLAB curve fitting.
Case 1: 1-dimensional distribution probability curve fitting.
Case 2: 2-dimensional stress-strain curve fitting.
Case 3: 3-dimensional fracture surface fitting.

[@ayenewyihune]

Very helpful. Is it possible to get the mathematical explanation behind the method

[@yuqiansi2934]

Very helpful, many thanks!

[@hcwwch8706]

兄弟，怎么拟合三维曲线啊？他出来的都是曲面。不会弄

[@dalmoamorim]

Nice job, Shen.

[@guidopetrovich5173]

Thanks for the tutorial!

[@tsehayenegash8394]

I have dialy one year temperature data. I want to investigate kelvin wave. The kelvin wave investigation is original temperature minus curve fitting temperature . How can I write a code for sinusoidal curve fitting of this temperature data? the data is 3 D

[@diegomendozafernandez3229]

Thanks!

[@lihang8710]

Hi Shen. I have a quick question. I am a little bit confused between curve fitting and parameter estimations. Does curve fitting toolbox also recognize the parameters?

[@fuhuishen358]

Yes, in the curve fitting toolbox, the optimized parameters of pre-defined equations will be provided.

[@-maroute-myroad7511]

Hi Mr Shen, please how to fit multiple graphs 2D

[@leimu3267]

Hello Dr. Shen. Hope you are doing well 😀Lei

[@fuhuishen358]

Haha, what a surprise!

[@cihatguleryuz7493]

thnks for sharing... how to import a text file data to this tool-fit.

[@fuhuishen358]

I created new variables first, then copy and paste the data. You can also import a txt file data into a workspace first, then select the corresponding variables.

[@cihatguleryuz7493]

@@fuhuishen358 my data is made of 205 rows in cartesian coordinates (xyz). this coordinates indicate a curvature of a layer. So, i want to calculate radius of this curvature systematically.. for this layer, hyperbolic paraboloid is suitable. hyperbolic paraboloid has an equation. z=y^2/a^2 -x^2/b^2. i want to fit my data to this equation. this is my problem